Alright got my vzn.1i and df3i putters balance and here is what I found.
As most of you may know these putters are not balanced when you get them and there is no way they can be since they just give you 6g and 8g weights and a crappy grip that is under weight and smells that you should replace. I went with a super stroke TLT grip on both my putters that is the same weight as the oem lab grip and is a press grip meant for lie angle balanced putters. Lets get into it, first to properly balance it you should have a level corner or you can use a can or something that you make level. An unlevel corner will 100% not balance your putter correctly. I bought my weights off aliexpress since they were the cheapest, I got 16g,12g,2.5g weights and the putters comes with 6g and 8g weights, I was able to get both of my putters balanced. Avoid 11g weights since they are too long and don't fit in the head, you want tungsten weights for anything over 8g. It's is absolutely possible to balance these putters so anyone being a dick and saying you cant no matter how many tungsten weights you buy is an idiot and has no idea what they are talking about. Here are pictures of my weight placements, obviously it might be a little different for you if you use a different grip than I did but it gives you an idea. I got my total weight pretty close to standard for the vzn1i at 546g and standard is 550g according to google. my df3i ended up at 543 grams. Bottom line these putters are not balanced when you get them, there is no way it's possible. I wonder if they are turning the grips to try to offset the balance in china because I have seen several posts that the grip was crooked. Anyways good luck, hopefully this helps someone. Also one picture shows my unlevel table corner and one picture shows the putter on a leveled soup can and you can see that it is not the same.
Man for all the haters saying it's not balanced go read this golfwrx post topic!
https://forums.golfwrx.com/topic/2045413-lab-putters-toe-up-resting-position/